723957972849 has 24 divisors (see below), whose sum is σ = 1058253718080. Its totient is φ = 476873665632.

The previous prime is 723957972797. The next prime is 723957972877. The reversal of 723957972849 is 948279759327.

723957972849 is a `hidden beast` number, since 7 + 2 + 3 + 9 + 579 + 7 + 2 + 8 + 49 = 666.

It is not a de Polignac number, because 723957972849 - 2¹⁶ = 723957907313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (723957972949) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 470794 + ... + 1292115.

It is an arithmetic number, because the mean of its divisors is an integer number (44093904920).

Almost surely, 2^723957972849 is an apocalyptic number.

It is an amenable number.

723957972849 is a deficient number, since it is larger than the sum of its proper divisors (334295745231).

723957972849 is a wasteful number, since it uses less digits than its factorization.

723957972849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1763461 (or 1763458 counting only the distinct ones).

The product of its digits is 480090240, while the sum is 72.

The spelling of 723957972849 in words is "seven hundred twenty-three billion, nine hundred fifty-seven million, nine hundred seventy-two thousand, eight hundred forty-nine".