61601034540 has 96 divisors (see below), whose sum is σ = 173426774976. Its totient is φ = 16337305600.

The previous prime is 61601034511. The next prime is 61601034571. The reversal of 61601034540 is 4543010616.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 61601034498 and 61601034507.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8489554 + ... + 8496806.

It is an arithmetic number, because the mean of its divisors is an integer number (1806528906).

Almost surely, 2^61601034540 is an apocalyptic number.

61601034540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61601034540 is an abundant number, since it is smaller than the sum of its proper divisors (111825740436).

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

61601034540 is a wasteful number, since it uses less digits than its factorization.

61601034540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8019 (or 8017 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The spelling of 61601034540 in words is "sixty-one billion, six hundred one million, thirty-four thousand, five hundred forty".