61192691230739 has 4 divisors (see below), whose sum is σ = 61582453595424. Its totient is φ = 60802928866056.

The previous prime is 61192691230733. The next prime is 61192691230813. The reversal of 61192691230739 is 93703219629116.

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

It is a cyclic number.

It is not a de Polignac number, because 61192691230739 - 2³⁶ = 61123971754003 is a prime.

It is a super-2 number, since 2×61192691230739² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61192691230733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194881182107 + ... + 194881182420.

It is an arithmetic number, because the mean of its divisors is an integer number (15395613398856).

Almost surely, 2^{61192691230739} is an apocalyptic number.

61192691230739 is a deficient number, since it is larger than the sum of its proper divisors (389762364685).

61192691230739 is a wasteful number, since it uses less digits than its factorization.

61192691230739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389762364684.

The product of its (nonzero) digits is 6613488, while the sum is 59.

The spelling of 61192691230739 in words is "sixty-one trillion, one hundred ninety-two billion, six hundred ninety-one million, two hundred thirty thousand, seven hundred thirty-nine".