20915751034 has 8 divisors (see below), whose sum is σ = 31415404608. Its totient is φ = 10443949500.

The previous prime is 20915751023. The next prime is 20915751037. The reversal of 20915751034 is 43015751902.

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

It is a junction number, because it is equal to n+sod(n) for n = 20915750984 and 20915751002.

It is not an unprimeable number, because it can be changed into a prime (20915751037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6961132 + ... + 6964135.

It is an arithmetic number, because the mean of its divisors is an integer number (3926925576).

Almost surely, 2^20915751034 is an apocalyptic number.

20915751034 is a deficient number, since it is larger than the sum of its proper divisors (10499653574).

20915751034 is a wasteful number, since it uses less digits than its factorization.

20915751034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13926020.

The product of its (nonzero) digits is 37800, while the sum is 37.

The spelling of 20915751034 in words is "twenty billion, nine hundred fifteen million, seven hundred fifty-one thousand, thirty-four".