402040111523544 has 64 divisors (see below), whose sum is σ = 1202684094309600. Its totient is φ = 123704649698688.

The previous prime is 402040111523509. The next prime is 402040111523549. The reversal of 402040111523544 is 445325111040204.

402040111523544 is a `hidden beast` number, since 4 + 0 + 2 + 0 + 401 + 1 + 15 + 235 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 402040111523499 and 402040111523508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402040111523549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71588336139 + ... + 71588341754.

Almost surely, 2^{402040111523544} is an apocalyptic number.

It is an amenable number.

402040111523544 is an abundant number, since it is smaller than the sum of its proper divisors (800643982786056).

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

402040111523544 is a wasteful number, since it uses less digits than its factorization.

402040111523544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143176677921 (or 143176677911 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

Adding to 402040111523544 its reverse (445325111040204), we get a palindrome (847365222563748).

The spelling of 402040111523544 in words is "four hundred two trillion, forty billion, one hundred eleven million, five hundred twenty-three thousand, five hundred forty-four".