215007989652 has 24 divisors (see below), whose sum is σ = 557428121600. Its totient is φ = 71669329848.

The previous prime is 215007989611. The next prime is 215007989653. The reversal of 215007989652 is 256989700512.

215007989652 is a `hidden beast` number, since 2 + 1 + 500 + 7 + 9 + 89 + 6 + 52 = 666.

It is a super-2 number, since 2×215007989652² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215007989653) 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, 995407252 + ... + 995407467.

Almost surely, 2^215007989652 is an apocalyptic number.

It is an amenable number.

215007989652 is an abundant number, since it is smaller than the sum of its proper divisors (342420131948).

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

215007989652 is a wasteful number, since it uses less digits than its factorization.

215007989652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990814732 (or 1990814724 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 54.

The spelling of 215007989652 in words is "two hundred fifteen billion, seven million, nine hundred eighty-nine thousand, six hundred fifty-two".