73734713781 has 4 divisors (see below), whose sum is σ = 98312951712. Its totient is φ = 49156475852.

The previous prime is 73734713779. The next prime is 73734713803. The reversal of 73734713781 is 18731743737.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 73734713781 - 2¹ = 73734713779 is a prime.

It is a super-2 number, since 2×73734713781² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73734703781) 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, 12289118961 + ... + 12289118966.

It is an arithmetic number, because the mean of its divisors is an integer number (24578237928).

Almost surely, 2^73734713781 is an apocalyptic number.

It is an amenable number.

73734713781 is a deficient number, since it is larger than the sum of its proper divisors (24578237931).

73734713781 is a wasteful number, since it uses less digits than its factorization.

73734713781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24578237930.

The product of its digits is 2074464, while the sum is 51.

The spelling of 73734713781 in words is "seventy-three billion, seven hundred thirty-four million, seven hundred thirteen thousand, seven hundred eighty-one".