40012421355 has 48 divisors (see below), whose sum is σ = 69631380000. Its totient is φ = 21255049728.

The previous prime is 40012421299. The next prime is 40012421363. The reversal of 40012421355 is 55312421004.

40012421355 is a `hidden beast` number, since 400 + 1 + 242 + 13 + 5 + 5 = 666.

40012421355 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40012421355 - 2⁶ = 40012421291 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18361656 + ... + 18363834.

It is an arithmetic number, because the mean of its divisors is an integer number (1450653750).

Almost surely, 2^40012421355 is an apocalyptic number.

40012421355 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40012421355 is a deficient number, since it is larger than the sum of its proper divisors (29618958645).

40012421355 is a wasteful number, since it uses less digits than its factorization.

40012421355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3628 (or 3625 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 40012421355 its reverse (55312421004), we get a palindrome (95324842359).

The spelling of 40012421355 in words is "forty billion, twelve million, four hundred twenty-one thousand, three hundred fifty-five".