61251313603415 has 32 divisors (see below), whose sum is σ = 80549340157440. Its totient is φ = 44436278030976.

The previous prime is 61251313603409. The next prime is 61251313603421. The reversal of 61251313603415 is 51430631315216.

It is an interprime number because it is at equal distance from previous prime (61251313603409) and next prime (61251313603421).

It is a de Polignac number, because none of the positive numbers 2^k-61251313603415 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 741884 + ... + 11092926.

It is an arithmetic number, because the mean of its divisors is an integer number (2517166879920).

Almost surely, 2^{61251313603415} is an apocalyptic number.

61251313603415 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

61251313603415 is a deficient number, since it is larger than the sum of its proper divisors (19298026554025).

61251313603415 is a wasteful number, since it uses less digits than its factorization.

61251313603415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10352663.

The product of its (nonzero) digits is 194400, while the sum is 41.

The spelling of 61251313603415 in words is "sixty-one trillion, two hundred fifty-one billion, three hundred thirteen million, six hundred three thousand, four hundred fifteen".