61734074253 has 4 divisors (see below), whose sum is σ = 82312099008. Its totient is φ = 41156049500.

The previous prime is 61734074251. The next prime is 61734074267. The reversal of 61734074253 is 35247043716.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61734074253 - 2¹ = 61734074251 is a prime.

It is a super-2 number, since 2×61734074253² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61734074251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10289012373 + ... + 10289012378.

It is an arithmetic number, because the mean of its divisors is an integer number (20578024752).

Almost surely, 2^61734074253 is an apocalyptic number.

It is an amenable number.

61734074253 is a deficient number, since it is larger than the sum of its proper divisors (20578024755).

61734074253 is a wasteful number, since it uses less digits than its factorization.

61734074253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20578024754.

The product of its (nonzero) digits is 423360, while the sum is 42.

The spelling of 61734074253 in words is "sixty-one billion, seven hundred thirty-four million, seventy-four thousand, two hundred fifty-three".