51450415240 has 32 divisors (see below), whose sum is σ = 132301068480. Its totient is φ = 17640142272.

The previous prime is 51450415223. The next prime is 51450415249. The reversal of 51450415240 is 4251405415.

It is a happy number.

51450415240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (51450415249) 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, 91875462 + ... + 91876021.

It is an arithmetic number, because the mean of its divisors is an integer number (4134408390).

Almost surely, 2^51450415240 is an apocalyptic number.

It is an amenable number.

51450415240 is an abundant number, since it is smaller than the sum of its proper divisors (80850653240).

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

51450415240 is a wasteful number, since it uses less digits than its factorization.

51450415240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183751501 (or 183751497 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 31.

The spelling of 51450415240 in words is "fifty-one billion, four hundred fifty million, four hundred fifteen thousand, two hundred forty".