152157883621 has 4 divisors (see below), whose sum is σ = 156270258892. Its totient is φ = 148045508352.

The previous prime is 152157883609. The next prime is 152157883649. The reversal of 152157883621 is 126388751251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 126388751251 = 7 ⋅18055535893.

It can be written as a sum of positive squares in 2 ways, for example, as 114794926596 + 37362957025 = 338814^2 + 193295^2 .

It is a cyclic number.

It is not a de Polignac number, because 152157883621 - 2⁹ = 152157883109 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 (152157883651) 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, 2056187580 + ... + 2056187653.

It is an arithmetic number, because the mean of its divisors is an integer number (39067564723).

Almost surely, 2^152157883621 is an apocalyptic number.

It is an amenable number.

152157883621 is a deficient number, since it is larger than the sum of its proper divisors (4112375271).

152157883621 is an equidigital number, since it uses as much as digits as its factorization.

152157883621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4112375270.

The product of its digits is 806400, while the sum is 49.

The spelling of 152157883621 in words is "one hundred fifty-two billion, one hundred fifty-seven million, eight hundred eighty-three thousand, six hundred twenty-one".