54358979596421 has 2 divisors, whose sum is σ = 54358979596422. Its totient is φ = 54358979596420.

The previous prime is 54358979596399. The next prime is 54358979596619. The reversal of 54358979596421 is 12469597985345.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27407161984225 + 26951817612196 = 5235185^2 + 5191514^2 .

It is a cyclic number.

It is not a de Polignac number, because 54358979596421 - 2⁶ = 54358979596357 is a prime.

It is a super-2 number, since 2×54358979596421² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54358979596021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27179489798210 + 27179489798211.

It is an arithmetic number, because the mean of its divisors is an integer number (27179489798211).

Almost surely, 2^{54358979596421} is an apocalyptic number.

It is an amenable number.

54358979596421 is a deficient number, since it is larger than the sum of its proper divisors (1).

54358979596421 is an equidigital number, since it uses as much as digits as its factorization.

54358979596421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2939328000, while the sum is 77.

The spelling of 54358979596421 in words is "fifty-four trillion, three hundred fifty-eight billion, nine hundred seventy-nine million, five hundred ninety-six thousand, four hundred twenty-one".