152507115661 has 4 divisors (see below), whose sum is σ = 153530653500. Its totient is φ = 151483577824.

The previous prime is 152507115659. The next prime is 152507115667. The reversal of 152507115661 is 166511705251.

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

It can be written as a sum of positive squares in 2 ways, for example, as 57279327561 + 95227788100 = 239331^2 + 308590^2 .

It is a cyclic number.

It is not a de Polignac number, because 152507115661 - 2¹ = 152507115659 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 (152507115667) 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, 511768696 + ... + 511768993.

It is an arithmetic number, because the mean of its divisors is an integer number (38382663375).

Almost surely, 2^152507115661 is an apocalyptic number.

It is an amenable number.

152507115661 is a deficient number, since it is larger than the sum of its proper divisors (1023537839).

152507115661 is a wasteful number, since it uses less digits than its factorization.

152507115661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1023537838.

The product of its (nonzero) digits is 63000, while the sum is 40.

The spelling of 152507115661 in words is "one hundred fifty-two billion, five hundred seven million, one hundred fifteen thousand, six hundred sixty-one".