61312507050 has 96 divisors (see below), whose sum is σ = 153675735552. Its totient is φ = 16176646080.

The previous prime is 61312507019. The next prime is 61312507057. The reversal of 61312507050 is 5070521316.

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

It is a junction number, because it is equal to n+sod(n) for n = 61312506999 and 61312507017.

It is not an unprimeable number, because it can be changed into a prime (61312507057) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5544627 + ... + 5555673.

It is an arithmetic number, because the mean of its divisors is an integer number (1600788912).

Almost surely, 2^61312507050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61312507050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76837867776).

61312507050 is an abundant number, since it is smaller than the sum of its proper divisors (92363228502).

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

61312507050 is a wasteful number, since it uses less digits than its factorization.

61312507050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11452 (or 11447 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 30.

The spelling of 61312507050 in words is "sixty-one billion, three hundred twelve million, five hundred seven thousand, fifty".