51692894890 has 32 divisors (see below), whose sum is σ = 114519646080. Its totient is φ = 16359948864.

The previous prime is 51692894843. The next prime is 51692894917. The reversal of 51692894890 is 9849829615.

It is a super-2 number, since 2×51692894890² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (61) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 28401780 + ... + 28403599.

It is an arithmetic number, because the mean of its divisors is an integer number (3578738940).

Almost surely, 2^51692894890 is an apocalyptic number.

51692894890 is an abundant number, since it is smaller than the sum of its proper divisors (62826751190).

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

51692894890 is a wasteful number, since it uses less digits than its factorization.

51692894890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56805406.

The product of its (nonzero) digits is 11197440, while the sum is 61.

The spelling of 51692894890 in words is "fifty-one billion, six hundred ninety-two million, eight hundred ninety-four thousand, eight hundred ninety".