20402622774 has 48 divisors (see below), whose sum is σ = 44338305024. Its totient is φ = 6780510000.

The previous prime is 20402622767. The next prime is 20402622781. The reversal of 20402622774 is 47722620402.

20402622774 is a `hidden beast` number, since 20 + 4 + 0 + 2 + 622 + 7 + 7 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (20402622767) and next prime (20402622781).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13395577 + ... + 13397099.

It is an arithmetic number, because the mean of its divisors is an integer number (923714688).

Almost surely, 2^20402622774 is an apocalyptic number.

20402622774 is an abundant number, since it is smaller than the sum of its proper divisors (23935682250).

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

20402622774 is a wasteful number, since it uses less digits than its factorization.

20402622774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3273 (or 3270 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 36.

The spelling of 20402622774 in words is "twenty billion, four hundred two million, six hundred twenty-two thousand, seven hundred seventy-four".