1020252040151 has 4 divisors (see below), whose sum is σ = 1020393180600. Its totient is φ = 1020110899704.

The previous prime is 1020252040109. The next prime is 1020252040163. The reversal of 1020252040151 is 1510402520201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020252040151 is a prime.

It is a super-2 number, since 2×1020252040151² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020252040651) 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, 70559381 + ... + 70573838.

It is an arithmetic number, because the mean of its divisors is an integer number (255098295150).

Almost surely, 2^{1020252040151} is an apocalyptic number.

1020252040151 is a deficient number, since it is larger than the sum of its proper divisors (141140449).

1020252040151 is an equidigital number, since it uses as much as digits as its factorization.

1020252040151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141140448.

The product of its (nonzero) digits is 800, while the sum is 23.

Adding to 1020252040151 its reverse (1510402520201), we get a palindrome (2530654560352).

The spelling of 1020252040151 in words is "one trillion, twenty billion, two hundred fifty-two million, forty thousand, one hundred fifty-one".