61738919039 has 8 divisors (see below), whose sum is σ = 70839877248. Its totient is φ = 52708239000.

The previous prime is 61738919027. The next prime is 61738919051. The reversal of 61738919039 is 93091983716.

It is an interprime number because it is at equal distance from previous prime (61738919027) and next prime (61738919051).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61738919039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61738919339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17567657 + ... + 17571170.

It is an arithmetic number, because the mean of its divisors is an integer number (8854984656).

Almost surely, 2^61738919039 is an apocalyptic number.

61738919039 is a deficient number, since it is larger than the sum of its proper divisors (9100958209).

61738919039 is a wasteful number, since it uses less digits than its factorization.

61738919039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35139085.

The product of its (nonzero) digits is 2204496, while the sum is 56.

The spelling of 61738919039 in words is "sixty-one billion, seven hundred thirty-eight million, nine hundred nineteen thousand, thirty-nine".