2155255712061 has 8 divisors (see below), whose sum is σ = 2882855352000. Its totient is φ = 1432246606752.

The previous prime is 2155255712041. The next prime is 2155255712119. The reversal of 2155255712061 is 1602175525512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2155255712061 - 2³¹ = 2153108228413 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155255712041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1147632561 + ... + 1147634438.

It is an arithmetic number, because the mean of its divisors is an integer number (360356919000).

Almost surely, 2^{2155255712061} is an apocalyptic number.

It is an amenable number.

2155255712061 is a deficient number, since it is larger than the sum of its proper divisors (727599639939).

2155255712061 is a wasteful number, since it uses less digits than its factorization.

2155255712061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2295267315.

The product of its (nonzero) digits is 210000, while the sum is 42.

The spelling of 2155255712061 in words is "two trillion, one hundred fifty-five billion, two hundred fifty-five million, seven hundred twelve thousand, sixty-one".