61992738948534 has 16 divisors (see below), whose sum is σ = 123986803241520. Its totient is φ = 20664025425440.

The previous prime is 61992738948509. The next prime is 61992738948541. The reversal of 61992738948534 is 43584983729916.

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 61992738948534.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54614097 + ... + 55737644.

It is an arithmetic number, because the mean of its divisors is an integer number (7749175202595).

Almost surely, 2^{61992738948534} is an apocalyptic number.

61992738948534 is an abundant number, since it is smaller than the sum of its proper divisors (61994064292986).

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

61992738948534 is a wasteful number, since it uses less digits than its factorization.

61992738948534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110445375.

The product of its digits is 2821754880, while the sum is 78.

The spelling of 61992738948534 in words is "sixty-one trillion, nine hundred ninety-two billion, seven hundred thirty-eight million, nine hundred forty-eight thousand, five hundred thirty-four".