20401631262 has 24 divisors (see below), whose sum is σ = 44432575824. Its totient is φ = 6765306624.

The previous prime is 20401631227. The next prime is 20401631279. The reversal of 20401631262 is 26213610402.

20401631262 is a `hidden beast` number, since 2 + 0 + 4 + 0 + 1 + 631 + 26 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2932858 + ... + 2939805.

It is an arithmetic number, because the mean of its divisors is an integer number (1851357326).

Almost surely, 2^20401631262 is an apocalyptic number.

20401631262 is an abundant number, since it is smaller than the sum of its proper divisors (24030944562).

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

20401631262 is a wasteful number, since it uses less digits than its factorization.

20401631262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5872864 (or 5872861 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The spelling of 20401631262 in words is "twenty billion, four hundred one million, six hundred thirty-one thousand, two hundred sixty-two".