61007652440 has 64 divisors (see below), whose sum is σ = 156902952960. Its totient is φ = 20913425280.

The previous prime is 61007652439. The next prime is 61007652479. The reversal of 61007652440 is 4425670016.

61007652440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 61007652440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2111129 + ... + 2139831.

It is an arithmetic number, because the mean of its divisors is an integer number (2451608640).

Almost surely, 2^61007652440 is an apocalyptic number.

It is an amenable number.

61007652440 is an abundant number, since it is smaller than the sum of its proper divisors (95895300520).

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

61007652440 is a wasteful number, since it uses less digits than its factorization.

61007652440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36312 (or 36308 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The spelling of 61007652440 in words is "sixty-one billion, seven million, six hundred fifty-two thousand, four hundred forty".