61520360493 has 16 divisors (see below), whose sum is σ = 82794412800. Its totient is φ = 40630075200.

The previous prime is 61520360479. The next prime is 61520360501. The reversal of 61520360493 is 39406302516.

61520360493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61520360493 - 2⁹ = 61520359981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61520360443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2325223 + ... + 2351531.

It is an arithmetic number, because the mean of its divisors is an integer number (5174650800).

Almost surely, 2^61520360493 is an apocalyptic number.

It is an amenable number.

61520360493 is a deficient number, since it is larger than the sum of its proper divisors (21274052307).

61520360493 is a wasteful number, since it uses less digits than its factorization.

61520360493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33572.

The product of its (nonzero) digits is 116640, while the sum is 39.

The spelling of 61520360493 in words is "sixty-one billion, five hundred twenty million, three hundred sixty thousand, four hundred ninety-three".