61881114031251 has 16 divisors (see below), whose sum is σ = 85409303765760. Its totient is φ = 39805368260000.

The previous prime is 61881114031249. The next prime is 61881114031279. The reversal of 61881114031251 is 15213041118816.

It is a cyclic number.

It is not a de Polignac number, because 61881114031251 - 2¹ = 61881114031249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61881114031201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 233379375 + ... + 233644376.

It is an arithmetic number, because the mean of its divisors is an integer number (5338081485360).

Almost surely, 2^{61881114031251} is an apocalyptic number.

61881114031251 is a deficient number, since it is larger than the sum of its proper divisors (23528189734509).

61881114031251 is a wasteful number, since it uses less digits than its factorization.

61881114031251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467025306.

The product of its (nonzero) digits is 46080, while the sum is 42.

The spelling of 61881114031251 in words is "sixty-one trillion, eight hundred eighty-one billion, one hundred fourteen million, thirty-one thousand, two hundred fifty-one".