61946850280 has 32 divisors (see below), whose sum is σ = 159291901440. Its totient is φ = 21238920000.

The previous prime is 61946850271. The next prime is 61946850299. The reversal of 61946850280 is 8205864916.

It is a super-2 number, since 2×61946850280² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110619096 + ... + 110619655.

It is an arithmetic number, because the mean of its divisors is an integer number (4977871920).

Almost surely, 2^61946850280 is an apocalyptic number.

It is an amenable number.

61946850280 is an abundant number, since it is smaller than the sum of its proper divisors (97345051160).

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

61946850280 is a wasteful number, since it uses less digits than its factorization.

61946850280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221238769 (or 221238765 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 49.

The spelling of 61946850280 in words is "sixty-one billion, nine hundred forty-six million, eight hundred fifty thousand, two hundred eighty".