61310550630 has 128 divisors (see below), whose sum is σ = 169445053440. Its totient is φ = 13907658240.

The previous prime is 61310550629. The next prime is 61310550641. The reversal of 61310550630 is 3605501316.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17234812 + ... + 17238368.

It is an arithmetic number, because the mean of its divisors is an integer number (1323789480).

Almost surely, 2^61310550630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61310550630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84722526720).

61310550630 is an abundant number, since it is smaller than the sum of its proper divisors (108134502810).

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

61310550630 is a wasteful number, since it uses less digits than its factorization.

61310550630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4174.

The product of its (nonzero) digits is 8100, while the sum is 30.

The spelling of 61310550630 in words is "sixty-one billion, three hundred ten million, five hundred fifty thousand, six hundred thirty".