61297918317435 has 32 divisors (see below), whose sum is σ = 98119027560960. Its totient is φ = 32678105419008.

The previous prime is 61297918317409. The next prime is 61297918317437. The reversal of 61297918317435 is 53471381979216.

It is not a de Polignac number, because 61297918317435 - 2¹² = 61297918313339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61297918317437) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 688054404 + ... + 688143486.

It is an arithmetic number, because the mean of its divisors is an integer number (3066219611280).

Almost surely, 2^{61297918317435} is an apocalyptic number.

61297918317435 is a deficient number, since it is larger than the sum of its proper divisors (36821109243525).

61297918317435 is a wasteful number, since it uses less digits than its factorization.

61297918317435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108387.

The product of its digits is 68584320, while the sum is 66.

The spelling of 61297918317435 in words is "sixty-one trillion, two hundred ninety-seven billion, nine hundred eighteen million, three hundred seventeen thousand, four hundred thirty-five".