61534744743516 has 48 divisors (see below), whose sum is σ = 156681033118848. Its totient is φ = 18641280750400.

The previous prime is 61534744743503. The next prime is 61534744743557.

61534744743516 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 61534744743516.

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, 69704655 + ... + 70581926.

It is an arithmetic number, because the mean of its divisors is an integer number (3264188189976).

Almost surely, 2^{61534744743516} is an apocalyptic number.

61534744743516 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

61534744743516 is an abundant number, since it is smaller than the sum of its proper divisors (95146288375332).

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

61534744743516 is a wasteful number, since it uses less digits than its factorization.

61534744743516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140289922 (or 140289920 counting only the distinct ones).

The product of its digits is 101606400, while the sum is 60.

The spelling of 61534744743516 in words is "sixty-one trillion, five hundred thirty-four billion, seven hundred forty-four million, seven hundred forty-three thousand, five hundred sixteen".