51445412315 has 48 divisors (see below), whose sum is σ = 70896417696. Its totient is φ = 35530521600.

The previous prime is 51445412303. The next prime is 51445412323. The reversal of 51445412315 is 51321454415.

It is a happy number.

It is not a de Polignac number, because 51445412315 - 2¹² = 51445408219 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2812439 + ... + 2830671.

It is an arithmetic number, because the mean of its divisors is an integer number (1477008702).

Almost surely, 2^51445412315 is an apocalyptic number.

51445412315 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51445412315 is a deficient number, since it is larger than the sum of its proper divisors (19451005381).

51445412315 is a wasteful number, since it uses less digits than its factorization.

51445412315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18368 (or 18339 counting only the distinct ones).

The product of its digits is 48000, while the sum is 35.

The spelling of 51445412315 in words is "fifty-one billion, four hundred forty-five million, four hundred twelve thousand, three hundred fifteen".