61372640000 has 360 divisors, whose sum is σ = 179801670048. Its totient is φ = 20459520000.

The previous prime is 61372639931. The next prime is 61372640003. The reversal of 61372640000 is 4627316.

It is not an unprimeable number, because it can be changed into a prime (61372640003) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 41439260 + ... + 41440740.

Almost surely, 2^61372640000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61372640000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89900835024).

61372640000 is an abundant number, since it is smaller than the sum of its proper divisors (118429030048).

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

61372640000 is an equidigital number, since it uses as much as digits as its factorization.

61372640000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561 (or 1532 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The spelling of 61372640000 in words is "sixty-one billion, three hundred seventy-two million, six hundred forty thousand".