67972455215 has 16 divisors (see below), whose sum is σ = 94978225728. Its totient is φ = 45730254336.

The previous prime is 67972455211. The next prime is 67972455269. The reversal of 67972455215 is 51255427976.

It is a cyclic number.

It is not a de Polignac number, because 67972455215 - 2² = 67972455211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67972455211) 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, 18319562 + ... + 18323271.

It is an arithmetic number, because the mean of its divisors is an integer number (5936139108).

Almost surely, 2^67972455215 is an apocalyptic number.

67972455215 is a deficient number, since it is larger than the sum of its proper divisors (27005770513).

67972455215 is a wasteful number, since it uses less digits than its factorization.

67972455215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36642898.

The product of its digits is 5292000, while the sum is 53.

The spelling of 67972455215 in words is "sixty-seven billion, nine hundred seventy-two million, four hundred fifty-five thousand, two hundred fifteen".