51930669490 has 16 divisors (see below), whose sum is σ = 106828805952. Its totient is φ = 17804800944.

The previous prime is 51930669449. The next prime is 51930669491. The reversal of 51930669490 is 9496603915.

It is not an unprimeable number, because it can be changed into a prime (51930669491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370933284 + ... + 370933423.

It is an arithmetic number, because the mean of its divisors is an integer number (6676800372).

Almost surely, 2^51930669490 is an apocalyptic number.

51930669490 is an abundant number, since it is smaller than the sum of its proper divisors (54898136462).

51930669490 is a wasteful number, since it uses less digits than its factorization.

51930669490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741866721.

The product of its (nonzero) digits is 1574640, while the sum is 52.

The spelling of 51930669490 in words is "fifty-one billion, nine hundred thirty million, six hundred sixty-nine thousand, four hundred ninety".