51621051290 has 32 divisors (see below), whose sum is σ = 93171798720. Its totient is φ = 20592072064.

The previous prime is 51621051283. The next prime is 51621051359. The reversal of 51621051290 is 9215012615.

51621051290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6750209 + ... + 6757851.

It is an arithmetic number, because the mean of its divisors is an integer number (2911618710).

Almost surely, 2^51621051290 is an apocalyptic number.

51621051290 is a deficient number, since it is larger than the sum of its proper divisors (41550747430).

51621051290 is a wasteful number, since it uses less digits than its factorization.

51621051290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9406.

The product of its (nonzero) digits is 5400, while the sum is 32.

The spelling of 51621051290 in words is "fifty-one billion, six hundred twenty-one million, fifty-one thousand, two hundred ninety".