40521668624572 has 12 divisors (see below), whose sum is σ = 70926348064096. Its totient is φ = 20256997749120.

The previous prime is 40521668624539. The next prime is 40521668624579. The reversal of 40521668624572 is 27542686612504.

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40521668624579) 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, 959117028 + ... + 959159275.

Almost surely, 2^{40521668624572} is an apocalyptic number.

It is an amenable number.

40521668624572 is a deficient number, since it is larger than the sum of its proper divisors (30404679439524).

40521668624572 is a wasteful number, since it uses less digits than its factorization.

40521668624572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1918281588 (or 1918281586 counting only the distinct ones).

The product of its (nonzero) digits is 38707200, while the sum is 58.

The spelling of 40521668624572 in words is "forty trillion, five hundred twenty-one billion, six hundred sixty-eight million, six hundred twenty-four thousand, five hundred seventy-two".