56121847402063 has 16 divisors (see below), whose sum is σ = 57276255474720. Its totient is φ = 54970985445376.

The previous prime is 56121847402057. The next prime is 56121847402069. The reversal of 56121847402063 is 36020474812165.

It is an interprime number because it is at equal distance from previous prime (56121847402057) and next prime (56121847402069).

It is a cyclic number.

It is not a de Polignac number, because 56121847402063 - 2²¹ = 56121845304911 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56121847401998 and 56121847402016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56121847402069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1091435568 + ... + 1091486986.

It is an arithmetic number, because the mean of its divisors is an integer number (3579765967170).

Almost surely, 2^{56121847402063} is an apocalyptic number.

56121847402063 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

56121847402063 is a deficient number, since it is larger than the sum of its proper divisors (1154408072657).

56121847402063 is a wasteful number, since it uses less digits than its factorization.

56121847402063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85466.

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 56121847402063 in words is "fifty-six trillion, one hundred twenty-one billion, eight hundred forty-seven million, four hundred two thousand, sixty-three".