274371972021 has 12 divisors (see below), whose sum is σ = 452931509472. Its totient is φ = 156783983976.

The previous prime is 274371971989. The next prime is 274371972029. The reversal of 274371972021 is 120279173472.

274371972021 is a `hidden beast` number, since 2 + 7 + 437 + 1 + 9 + 7 + 202 + 1 = 666.

It is not a de Polignac number, because 274371972021 - 2⁵ = 274371971989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (274371972029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2177555271 + ... + 2177555396.

It is an arithmetic number, because the mean of its divisors is an integer number (37744292456).

Almost surely, 2^274371972021 is an apocalyptic number.

274371972021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

274371972021 is a deficient number, since it is larger than the sum of its proper divisors (178559537451).

274371972021 is a wasteful number, since it uses less digits than its factorization.

274371972021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4355110680 (or 4355110677 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 45.

The spelling of 274371972021 in words is "two hundred seventy-four billion, three hundred seventy-one million, nine hundred seventy-two thousand, twenty-one".