61420522063 has 12 divisors (see below), whose sum is σ = 64227786840. Its totient is φ = 58731124496.

The previous prime is 61420522061. The next prime is 61420522069. The reversal of 61420522063 is 36022502416.

It is not a de Polignac number, because 61420522063 - 2¹ = 61420522061 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 (61420522061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1788468 + ... + 1822486.

It is an arithmetic number, because the mean of its divisors is an integer number (5352315570).

Almost surely, 2^61420522063 is an apocalyptic number.

61420522063 is a deficient number, since it is larger than the sum of its proper divisors (2807264777).

61420522063 is a wasteful number, since it uses less digits than its factorization.

61420522063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37478 (or 37455 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The spelling of 61420522063 in words is "sixty-one billion, four hundred twenty million, five hundred twenty-two thousand, sixty-three".