61263401320 has 64 divisors (see below), whose sum is σ = 155559139200. Its totient is φ = 21509402880.

The previous prime is 61263401299. The next prime is 61263401323. The reversal of 61263401320 is 2310436216.

It is not an unprimeable number, because it can be changed into a prime (61263401323) 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, 2387844 + ... + 2413363.

It is an arithmetic number, because the mean of its divisors is an integer number (2430611550).

Almost surely, 2^61263401320 is an apocalyptic number.

It is an amenable number.

61263401320 is an abundant number, since it is smaller than the sum of its proper divisors (94295737880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61263401320 is a wasteful number, since it uses less digits than its factorization.

61263401320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4801258 (or 4801254 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 61263401320 its reverse (2310436216), we get a palindrome (63573837536).

The spelling of 61263401320 in words is "sixty-one billion, two hundred sixty-three million, four hundred one thousand, three hundred twenty".