37405522640 has 40 divisors (see below), whose sum is σ = 86976817800. Its totient is φ = 14960664576.

The previous prime is 37405522621. The next prime is 37405522669. The reversal of 37405522640 is 4622550473.

37405522640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 82373776 + 37323148864 = 9076^2 + 193192^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 37405522594 and 37405522603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1055936 + ... + 1090784.

It is an arithmetic number, because the mean of its divisors is an integer number (2174420445).

Almost surely, 2^37405522640 is an apocalyptic number.

It is an amenable number.

37405522640 is an abundant number, since it is smaller than the sum of its proper divisors (49571295160).

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

37405522640 is a wasteful number, since it uses less digits than its factorization.

37405522640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48279 (or 48273 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 38.

The spelling of 37405522640 in words is "thirty-seven billion, four hundred five million, five hundred twenty-two thousand, six hundred forty".