61540053253724 has 12 divisors (see below), whose sum is σ = 114030098676144. Its totient is φ = 28960025060544.

The previous prime is 61540053253703. The next prime is 61540053253753. The reversal of 61540053253724 is 42735235004516.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 452500391504 + ... + 452500391639.

It is an arithmetic number, because the mean of its divisors is an integer number (9502508223012).

Almost surely, 2^{61540053253724} is an apocalyptic number.

It is an amenable number.

61540053253724 is a deficient number, since it is larger than the sum of its proper divisors (52490045422420).

61540053253724 is a wasteful number, since it uses less digits than its factorization.

61540053253724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905000783164 (or 905000783162 counting only the distinct ones).

The product of its (nonzero) digits is 3024000, while the sum is 47.

The spelling of 61540053253724 in words is "sixty-one trillion, five hundred forty billion, fifty-three million, two hundred fifty-three thousand, seven hundred twenty-four".