691472135373 has 8 divisors (see below), whose sum is σ = 953754669600. Its totient is φ = 445085512368.

The previous prime is 691472135327. The next prime is 691472135383. The reversal of 691472135373 is 373531274196.

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

It is not a de Polignac number, because 691472135373 - 2¹⁶ = 691472069837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (691472135303) 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, 3973977703 + ... + 3973977876.

It is an arithmetic number, because the mean of its divisors is an integer number (119219333700).

Almost surely, 2^691472135373 is an apocalyptic number.

It is an amenable number.

691472135373 is a deficient number, since it is larger than the sum of its proper divisors (262282534227).

691472135373 is a wasteful number, since it uses less digits than its factorization.

691472135373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7947955611.

The product of its digits is 2857680, while the sum is 51.

The spelling of 691472135373 in words is "six hundred ninety-one billion, four hundred seventy-two million, one hundred thirty-five thousand, three hundred seventy-three".