40345553920 has 88 divisors (see below), whose sum is σ = 110608154784. Its totient is φ = 13832749056.

The previous prime is 40345553917. The next prime is 40345553957. The reversal of 40345553920 is 2935554304.

It is a super-2 number, since 2×40345553920² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 527017 + ... + 598696.

Almost surely, 2^40345553920 is an apocalyptic number.

40345553920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40345553920 is an abundant number, since it is smaller than the sum of its proper divisors (70262600864).

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

40345553920 is a wasteful number, since it uses less digits than its factorization.

40345553920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125745 (or 1125727 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 40.

The spelling of 40345553920 in words is "forty billion, three hundred forty-five million, five hundred fifty-three thousand, nine hundred twenty".