40425767251664 has 10 divisors (see below), whose sum is σ = 78324924050130. Its totient is φ = 20212883625824.

The previous prime is 40425767251643. The next prime is 40425767251673. The reversal of 40425767251664 is 46615276752404.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 35135730451600 + 5290036800064 = 5927540^2 + 2300008^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1263305226599 + ... + 1263305226630.

It is an arithmetic number, because the mean of its divisors is an integer number (7832492405013).

Almost surely, 2^{40425767251664} is an apocalyptic number.

It is an amenable number.

40425767251664 is a deficient number, since it is larger than the sum of its proper divisors (37899156798466).

40425767251664 is a wasteful number, since it uses less digits than its factorization.

40425767251664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2526610453237 (or 2526610453231 counting only the distinct ones).

The product of its (nonzero) digits is 67737600, while the sum is 59.

The spelling of 40425767251664 in words is "forty trillion, four hundred twenty-five billion, seven hundred sixty-seven million, two hundred fifty-one thousand, six hundred sixty-four".