72467833877 has 4 divisors (see below), whose sum is σ = 72469055916. Its totient is φ = 72466611840.

The previous prime is 72467833871. The next prime is 72467833951. The reversal of 72467833877 is 77833876427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77833876427 = 1229 ⋅63331063.

It can be written as a sum of positive squares in 2 ways, for example, as 51188610001 + 21279223876 = 226249^2 + 145874^2 .

It is a cyclic number.

It is not a de Polignac number, because 72467833877 - 2⁸ = 72467833621 is a prime.

It is a super-2 number, since 2×72467833877² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72467833871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 517274 + ... + 642267.

It is an arithmetic number, because the mean of its divisors is an integer number (18117263979).

Almost surely, 2^72467833877 is an apocalyptic number.

It is an amenable number.

72467833877 is a deficient number, since it is larger than the sum of its proper divisors (1222039).

72467833877 is a wasteful number, since it uses less digits than its factorization.

72467833877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222038.

The product of its digits is 66382848, while the sum is 62.

The spelling of 72467833877 in words is "seventy-two billion, four hundred sixty-seven million, eight hundred thirty-three thousand, eight hundred seventy-seven".