61207124559240 has 256 divisors, whose sum is σ = 212108086667520. Its totient is φ = 13964559319040.

The previous prime is 61207124559173. The next prime is 61207124559271. The reversal of 61207124559240 is 4295542170216.

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 61207124559240.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 541039162 + ... + 541152278.

It is an arithmetic number, because the mean of its divisors is an integer number (828547213545).

Almost surely, 2^{61207124559240} is an apocalyptic number.

61207124559240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61207124559240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106054043333760).

61207124559240 is an abundant number, since it is smaller than the sum of its proper divisors (150900962108280).

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

61207124559240 is a wasteful number, since it uses less digits than its factorization.

61207124559240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137272 (or 137268 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 48.

The spelling of 61207124559240 in words is "sixty-one trillion, two hundred seven billion, one hundred twenty-four million, five hundred fifty-nine thousand, two hundred forty".