20787880034 has 8 divisors (see below), whose sum is σ = 31484556480. Its totient is φ = 10293027876.

The previous prime is 20787880019. The next prime is 20787880051. The reversal of 20787880034 is 43008878702.

It is a happy number.

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

It is a Curzon 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, 50455814 + ... + 50456225.

It is an arithmetic number, because the mean of its divisors is an integer number (3935569560).

Almost surely, 2^20787880034 is an apocalyptic number.

20787880034 is a deficient number, since it is larger than the sum of its proper divisors (10696676446).

20787880034 is a wasteful number, since it uses less digits than its factorization.

20787880034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100912144.

The product of its (nonzero) digits is 602112, while the sum is 47.

The spelling of 20787880034 in words is "twenty billion, seven hundred eighty-seven million, eight hundred eighty thousand, thirty-four".