51556507001703 has 48 divisors (see below), whose sum is σ = 82776586628736. Its totient is φ = 30655632496320.

The previous prime is 51556507001591. The next prime is 51556507001723. The reversal of 51556507001703 is 30710070565515.

51556507001703 is a `hidden beast` number, since 5 + 1 + 5 + 565 + 0 + 70 + 0 + 17 + 0 + 3 = 666.

It is not a de Polignac number, because 51556507001703 - 2⁴⁰ = 50456995373927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51556507001723) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 146882376 + ... + 147232962.

It is an arithmetic number, because the mean of its divisors is an integer number (1724512221432).

Almost surely, 2^{51556507001703} is an apocalyptic number.

51556507001703 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

51556507001703 is a deficient number, since it is larger than the sum of its proper divisors (31220079627033).

51556507001703 is a wasteful number, since it uses less digits than its factorization.

51556507001703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378684 (or 378681 counting only the distinct ones).

The product of its (nonzero) digits is 551250, while the sum is 45.

The spelling of 51556507001703 in words is "fifty-one trillion, five hundred fifty-six billion, five hundred seven million, one thousand, seven hundred three".