51769887280 has 40 divisors (see below), whose sum is σ = 120474914112. Its totient is φ = 20689042944.

The previous prime is 51769887269. The next prime is 51769887287. The reversal of 51769887280 is 8278896715.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (51769887287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207192 + ... + 382711.

Almost surely, 2^51769887280 is an apocalyptic number.

It is an amenable number.

51769887280 is an abundant number, since it is smaller than the sum of its proper divisors (68705026832).

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

51769887280 is a wasteful number, since it uses less digits than its factorization.

51769887280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591013 (or 591007 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 61.

The spelling of 51769887280 in words is "fifty-one billion, seven hundred sixty-nine million, eight hundred eighty-seven thousand, two hundred eighty".