20914478365 has 32 divisors (see below), whose sum is σ = 27534753792. Its totient is φ = 15124200000.

The previous prime is 20914478357. The next prime is 20914478393. The reversal of 20914478365 is 56387441902.

It is a happy number.

It is not a de Polignac number, because 20914478365 - 2³ = 20914478357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12575524 + ... + 12577186.

It is an arithmetic number, because the mean of its divisors is an integer number (860461056).

It is a 2-persistent number, because it is pandigital, and so is 2⋅20914478365 = 41828956730, but 3⋅20914478365 = 62743435095 is not.

Almost surely, 2^20914478365 is an apocalyptic number.

20914478365 is the 91465-th heptagonal number.

It is an amenable number.

20914478365 is a deficient number, since it is larger than the sum of its proper divisors (6620275427).

20914478365 is a wasteful number, since it uses less digits than its factorization.

20914478365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2841.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 20914478365 in words is "twenty billion, nine hundred fourteen million, four hundred seventy-eight thousand, three hundred sixty-five".