51342445436636 has 24 divisors (see below), whose sum is σ = 91697316565680. Its totient is φ = 25146308969600.

The previous prime is 51342445436629. The next prime is 51342445436647. The reversal of 51342445436636 is 63663454424315.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 387038195 + ... + 387170826.

It is an arithmetic number, because the mean of its divisors is an integer number (3820721523570).

Almost surely, 2^{51342445436636} is an apocalyptic number.

It is an amenable number.

51342445436636 is a deficient number, since it is larger than the sum of its proper divisors (40354871129044).

51342445436636 is a wasteful number, since it uses less digits than its factorization.

51342445436636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774209365 (or 774209363 counting only the distinct ones).

The product of its digits is 74649600, while the sum is 56.

The spelling of 51342445436636 in words is "fifty-one trillion, three hundred forty-two billion, four hundred forty-five million, four hundred thirty-six thousand, six hundred thirty-six".