61376961946840 has 32 divisors (see below), whose sum is σ = 138098394514080. Its totient is φ = 24550743866112.

The previous prime is 61376961946819. The next prime is 61376961946841. The reversal of 61376961946840 is 4864916967316.

It is a self number, because there is not a number n which added to its sum of digits gives 61376961946840.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61376961946841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37682197 + ... + 39277243.

It is an arithmetic number, because the mean of its divisors is an integer number (4315574828565).

Almost surely, 2^{61376961946840} is an apocalyptic number.

It is an amenable number.

61376961946840 is an abundant number, since it is smaller than the sum of its proper divisors (76721432567240).

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

61376961946840 is a wasteful number, since it uses less digits than its factorization.

61376961946840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2557051 (or 2557047 counting only the distinct ones).

The product of its (nonzero) digits is 282175488, while the sum is 70.

The spelling of 61376961946840 in words is "sixty-one trillion, three hundred seventy-six billion, nine hundred sixty-one million, nine hundred forty-six thousand, eight hundred forty".