40011512420 has 24 divisors (see below), whose sum is σ = 91662738048. Its totient is φ = 14549640800.

The previous prime is 40011512407. The next prime is 40011512449. The reversal of 40011512420 is 2421511004.

It is a happy number.

40011512420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40011512420² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 40011512392 and 40011512401.

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, 90935036 + ... + 90935475.

It is an arithmetic number, because the mean of its divisors is an integer number (3819280752).

Almost surely, 2^40011512420 is an apocalyptic number.

It is an amenable number.

40011512420 is an abundant number, since it is smaller than the sum of its proper divisors (51651225628).

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

40011512420 is a wasteful number, since it uses less digits than its factorization.

40011512420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181870531 (or 181870529 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The spelling of 40011512420 in words is "forty billion, eleven million, five hundred twelve thousand, four hundred twenty".