61620224654263 has 32 divisors (see below), whose sum is σ = 69161116887360. Its totient is φ = 54426252672000.

The previous prime is 61620224654249. The next prime is 61620224654279. The reversal of 61620224654263 is 36245642202616.

It is not a de Polignac number, because 61620224654263 - 2²⁹ = 61619687783351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61620224654213) 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, 59022373 + ... + 60057313.

It is an arithmetic number, because the mean of its divisors is an integer number (2161284902730).

Almost surely, 2^{61620224654263} is an apocalyptic number.

61620224654263 is a deficient number, since it is larger than the sum of its proper divisors (7540892233097).

61620224654263 is a wasteful number, since it uses less digits than its factorization.

61620224654263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036099.

The product of its (nonzero) digits is 4976640, while the sum is 49.

Adding to 61620224654263 its reverse (36245642202616), we get a palindrome (97865866856879).

The spelling of 61620224654263 in words is "sixty-one trillion, six hundred twenty billion, two hundred twenty-four million, six hundred fifty-four thousand, two hundred sixty-three".