Search a number
-
+
2130011787157 = 13591156722227
BaseRepresentation
bin11110111111101110100…
…110001000111110010101
321112121221011221221112021
4132333232212020332111
5234344231004142112
64310303000453141
7306613451314222
oct36775646107625
97477834857467
102130011787157
11751373140871
122a498877a1b1
13125b22a05047
1475143746949
153a616dbd907
hex1efee988f95

2130011787157 has 4 divisors (see below), whose sum is σ = 2130168522976. Its totient is φ = 2129855051340.

The previous prime is 2130011787139. The next prime is 2130011787179. The reversal of 2130011787157 is 7517871100312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2130011787157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130011787257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78347523 + ... + 78374704.

It is an arithmetic number, because the mean of its divisors is an integer number (532542130744).

Almost surely, 22130011787157 is an apocalyptic number.

It is an amenable number.

2130011787157 is a deficient number, since it is larger than the sum of its proper divisors (156735819).

2130011787157 is a wasteful number, since it uses less digits than its factorization.

2130011787157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156735818.

The product of its (nonzero) digits is 82320, while the sum is 43.

Adding to 2130011787157 its reverse (7517871100312), we get a palindrome (9647882887469).

The spelling of 2130011787157 in words is "two trillion, one hundred thirty billion, eleven million, seven hundred eighty-seven thousand, one hundred fifty-seven".

Divisors: 1 13591 156722227 2130011787157