61301265546540 has 48 divisors (see below), whose sum is σ = 171649901237472. Its totient is φ = 16346398649856.

The previous prime is 61301265546517. The next prime is 61301265546557. The reversal of 61301265546540 is 4564556210316.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 61301265546540.

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, 17287219 + ... + 20529258.

It is an arithmetic number, because the mean of its divisors is an integer number (3576039609114).

Almost surely, 2^{61301265546540} is an apocalyptic number.

61301265546540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61301265546540 is an abundant number, since it is smaller than the sum of its proper divisors (110348635690932).

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

61301265546540 is a wasteful number, since it uses less digits than its factorization.

61301265546540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37843506 (or 37843504 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 48.

The spelling of 61301265546540 in words is "sixty-one trillion, three hundred one billion, two hundred sixty-five million, five hundred forty-six thousand, five hundred forty".