20015481402 has 64 divisors (see below), whose sum is σ = 51282927360. Its totient is φ = 5668088832.

The previous prime is 20015481397. The next prime is 20015481427. The reversal of 20015481402 is 20418451002.

20015481402 is a `hidden beast` number, since 200 + 1 + 54 + 8 + 1 + 402 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 31 ways as a sum of consecutive naturals, for example, 191583 + ... + 277010.

It is an arithmetic number, because the mean of its divisors is an integer number (801295740).

Almost surely, 2^20015481402 is an apocalyptic number.

20015481402 is an abundant number, since it is smaller than the sum of its proper divisors (31267445958).

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

20015481402 is a wasteful number, since it uses less digits than its factorization.

20015481402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468724 (or 468718 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The spelling of 20015481402 in words is "twenty billion, fifteen million, four hundred eighty-one thousand, four hundred two".