61010877040 has 40 divisors (see below), whose sum is σ = 150194427120. Its totient is φ = 22968800256.

The previous prime is 61010877013. The next prime is 61010877061. The reversal of 61010877040 is 4077801016.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 61010876987 and 61010877005.

It is a congruent number.

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, 22429110 + ... + 22431829.

It is an arithmetic number, because the mean of its divisors is an integer number (3754860678).

Almost surely, 2^61010877040 is an apocalyptic number.

It is an amenable number.

61010877040 is an abundant number, since it is smaller than the sum of its proper divisors (89183550080).

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

61010877040 is a wasteful number, since it uses less digits than its factorization.

61010877040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44860969 (or 44860963 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 34.

The spelling of 61010877040 in words is "sixty-one billion, ten million, eight hundred seventy-seven thousand, forty".