20766501534 has 8 divisors (see below), whose sum is σ = 41533003080. Its totient is φ = 6922167176.

The previous prime is 20766501493. The next prime is 20766501541. The reversal of 20766501534 is 43510566702.

It is a sphenic number, since it is the product of 3 distinct primes.

20766501534 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 20766501492 and 20766501501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1730541789 + ... + 1730541800.

It is an arithmetic number, because the mean of its divisors is an integer number (5191625385).

Almost surely, 2^20766501534 is an apocalyptic number.

20766501534 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20766501534 is a wasteful number, since it uses less digits than its factorization.

20766501534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3461083594.

The product of its (nonzero) digits is 151200, while the sum is 39.

The spelling of 20766501534 in words is "twenty billion, seven hundred sixty-six million, five hundred one thousand, five hundred thirty-four".