20152215312 has 40 divisors (see below), whose sum is σ = 52773047904. Its totient is φ = 6625384704.

The previous prime is 20152215287. The next prime is 20152215319. The reversal of 20152215312 is 21351225102.

It is a super-2 number, since 2×20152215312² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (20152215319) 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, 2872098 + ... + 2879105.

Almost surely, 2^20152215312 is an apocalyptic number.

It is an amenable number.

20152215312 is an abundant number, since it is smaller than the sum of its proper divisors (32620832592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20152215312 is a wasteful number, since it uses less digits than its factorization.

20152215312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5751287 (or 5751281 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The spelling of 20152215312 in words is "twenty billion, one hundred fifty-two million, two hundred fifteen thousand, three hundred twelve".