61013999739722 has 4 divisors (see below), whose sum is σ = 91520999609586. Its totient is φ = 30506999869860.

The previous prime is 61013999739631. The next prime is 61013999739767. The reversal of 61013999739722 is 22793799931016.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 60680064847081 + 333934892641 = 7789741^2 + 577871^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15253499934929 + ... + 15253499934932.

Almost surely, 2^{61013999739722} is an apocalyptic number.

61013999739722 is a deficient number, since it is larger than the sum of its proper divisors (30506999869864).

61013999739722 is a wasteful number, since it uses less digits than its factorization.

61013999739722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30506999869863.

The product of its (nonzero) digits is 69441624, while the sum is 68.

The spelling of 61013999739722 in words is "sixty-one trillion, thirteen billion, nine hundred ninety-nine million, seven hundred thirty-nine thousand, seven hundred twenty-two".