61431873874251 has 8 divisors (see below), whose sum is σ = 81909204657360. Its totient is φ = 40954562836992.

The previous prime is 61431873874249. The next prime is 61431873874279. The reversal of 61431873874251 is 15247837813416.

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

It is not a de Polignac number, because 61431873874251 - 2¹ = 61431873874249 is a prime.

It is a super-2 number, since 2×61431873874251² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61431873874291) 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, 5436871 + ... + 12345983.

It is an arithmetic number, because the mean of its divisors is an integer number (10238650582170).

Almost surely, 2^{61431873874251} is an apocalyptic number.

61431873874251 is a deficient number, since it is larger than the sum of its proper divisors (20477330783109).

61431873874251 is a wasteful number, since it uses less digits than its factorization.

61431873874251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9872925.

The product of its digits is 27095040, while the sum is 60.

The spelling of 61431873874251 in words is "sixty-one trillion, four hundred thirty-one billion, eight hundred seventy-three million, eight hundred seventy-four thousand, two hundred fifty-one".