56261400066421 has 8 divisors (see below), whose sum is σ = 62681946689664. Its totient is φ = 50058499091520.

The previous prime is 56261400066397. The next prime is 56261400066449. The reversal of 56261400066421 is 12466000416265.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56261400066421 - 2²¹ = 56261397969269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56261400066481) 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, 54411411540 + ... + 54411412573.

It is an arithmetic number, because the mean of its divisors is an integer number (7835243336208).

Almost surely, 2^{56261400066421} is an apocalyptic number.

It is an amenable number.

56261400066421 is a deficient number, since it is larger than the sum of its proper divisors (6420546623243).

56261400066421 is a wasteful number, since it uses less digits than its factorization.

56261400066421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108822824171.

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 56261400066421 in words is "fifty-six trillion, two hundred sixty-one billion, four hundred million, sixty-six thousand, four hundred twenty-one".