79191463749 has 16 divisors (see below), whose sum is σ = 111944400192. Its totient is φ = 49624456448.

The previous prime is 79191463727. The next prime is 79191463777. The reversal of 79191463749 is 94736419197.

It is a cyclic number.

It is not a de Polignac number, because 79191463749 - 2⁹ = 79191463237 is a prime.

It is a super-2 number, since 2×79191463749² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 79191463692 and 79191463701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79191467749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 964959 + ... + 1043804.

It is an arithmetic number, because the mean of its divisors is an integer number (6996525012).

Almost surely, 2^79191463749 is an apocalyptic number.

It is an amenable number.

79191463749 is a deficient number, since it is larger than the sum of its proper divisors (32752936443).

79191463749 is a wasteful number, since it uses less digits than its factorization.

79191463749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2009556.

The product of its digits is 10287648, while the sum is 60.

The spelling of 79191463749 in words is "seventy-nine billion, one hundred ninety-one million, four hundred sixty-three thousand, seven hundred forty-nine".