40387210272 has 72 divisors (see below), whose sum is σ = 119844676224. Its totient is φ = 12877079424.

The previous prime is 40387210229. The next prime is 40387210291. The reversal of 40387210272 is 27201278304.

40387210272 is a `hidden beast` number, since 4 + 0 + 387 + 2 + 1 + 0 + 272 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×40387210272² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (36) 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 (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3041928 + ... + 3055175.

It is an arithmetic number, because the mean of its divisors is an integer number (1664509392).

Almost surely, 2^40387210272 is an apocalyptic number.

It is an amenable number.

40387210272 is an abundant number, since it is smaller than the sum of its proper divisors (79457465952).

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

40387210272 is a wasteful number, since it uses less digits than its factorization.

40387210272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6097142 (or 6097131 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

Adding to 40387210272 its reverse (27201278304), we get a palindrome (67588488576).

The spelling of 40387210272 in words is "forty billion, three hundred eighty-seven million, two hundred ten thousand, two hundred seventy-two".