20451410766 has 32 divisors (see below), whose sum is σ = 45454258080. Its totient is φ = 6816135168.

The previous prime is 20451410761. The next prime is 20451410783. The reversal of 20451410766 is 66701415402.

It is a self number, because there is not a number n which added to its sum of digits gives 20451410766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20451410761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 404740 + ... + 452456.

It is an arithmetic number, because the mean of its divisors is an integer number (1420445565).

Almost surely, 2^20451410766 is an apocalyptic number.

20451410766 is an abundant number, since it is smaller than the sum of its proper divisors (25002847314).

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

20451410766 is a wasteful number, since it uses less digits than its factorization.

20451410766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55665 (or 55659 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 20451410766 in words is "twenty billion, four hundred fifty-one million, four hundred ten thousand, seven hundred sixty-six".