61503315023 has 4 divisors (see below), whose sum is σ = 61503811320. Its totient is φ = 61502818728.

The previous prime is 61503314923. The next prime is 61503315061. The reversal of 61503315023 is 32051330516.

61503315023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 61503315023 - 2¹² = 61503310927 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 (61503615023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111161 + ... + 367917.

It is an arithmetic number, because the mean of its divisors is an integer number (15375952830).

Almost surely, 2^61503315023 is an apocalyptic number.

61503315023 is a deficient number, since it is larger than the sum of its proper divisors (496297).

61503315023 is a wasteful number, since it uses less digits than its factorization.

61503315023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496296.

The product of its (nonzero) digits is 8100, while the sum is 29.

Adding to 61503315023 its reverse (32051330516), we get a palindrome (93554645539).

The spelling of 61503315023 in words is "sixty-one billion, five hundred three million, three hundred fifteen thousand, twenty-three".