61497026418 has 16 divisors (see below), whose sum is σ = 123068299680. Its totient is φ = 20486634336.

The previous prime is 61497026413. The next prime is 61497026441. The reversal of 61497026418 is 81462079416.

It is not an unprimeable number, because it can be changed into a prime (61497026413) 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, 3082848 + ... + 3102731.

It is an arithmetic number, because the mean of its divisors is an integer number (7691768730).

Almost surely, 2^61497026418 is an apocalyptic number.

61497026418 is an abundant number, since it is smaller than the sum of its proper divisors (61571273262).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61497026418 is a wasteful number, since it uses less digits than its factorization.

61497026418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6187241.

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 61497026418 in words is "sixty-one billion, four hundred ninety-seven million, twenty-six thousand, four hundred eighteen".