61650637247455 has 32 divisors (see below), whose sum is σ = 78015934491840. Its totient is φ = 46639854535680.

The previous prime is 61650637247389. The next prime is 61650637247489. The reversal of 61650637247455 is 55474273605616.

It is not a de Polignac number, because 61650637247455 - 2³¹ = 61648489763807 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61650637247393 and 61650637247402.

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, 324448675 + ... + 324638635.

It is an arithmetic number, because the mean of its divisors is an integer number (2437997952870).

Almost surely, 2^{61650637247455} is an apocalyptic number.

61650637247455 is a deficient number, since it is larger than the sum of its proper divisors (16365297244385).

61650637247455 is a wasteful number, since it uses less digits than its factorization.

61650637247455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196171.

The product of its (nonzero) digits is 127008000, while the sum is 61.

The spelling of 61650637247455 in words is "sixty-one trillion, six hundred fifty billion, six hundred thirty-seven million, two hundred forty-seven thousand, four hundred fifty-five".