72963778051 has 2 divisors, whose sum is σ = 72963778052. Its totient is φ = 72963778050.

The previous prime is 72963778001. The next prime is 72963778067. The reversal of 72963778051 is 15087736927.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72963778051 - 2²³ = 72955389443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72963777983 and 72963778001.

It is not a weakly prime, because it can be changed into another prime (72963778001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36481889025 + 36481889026.

It is an arithmetic number, because the mean of its divisors is an integer number (36481889026).

Almost surely, 2^72963778051 is an apocalyptic number.

72963778051 is a deficient number, since it is larger than the sum of its proper divisors (1).

72963778051 is an equidigital number, since it uses as much as digits as its factorization.

72963778051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4445280, while the sum is 55.

The spelling of 72963778051 in words is "seventy-two billion, nine hundred sixty-three million, seven hundred seventy-eight thousand, fifty-one".