73145958457 has 64 divisors (see below), whose sum is σ = 90367377408. Its totient is φ = 58296672000.

The previous prime is 73145958439. The next prime is 73145958467. The reversal of 73145958457 is 75485954137.

It is a cyclic number.

It is not a de Polignac number, because 73145958457 - 2⁷ = 73145958329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73145958427) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 96625723 + ... + 96626479.

It is an arithmetic number, because the mean of its divisors is an integer number (1411990272).

Almost surely, 2^73145958457 is an apocalyptic number.

It is an amenable number.

73145958457 is a deficient number, since it is larger than the sum of its proper divisors (17221418951).

73145958457 is a wasteful number, since it uses less digits than its factorization.

73145958457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190.

The product of its digits is 21168000, while the sum is 58.

The spelling of 73145958457 in words is "seventy-three billion, one hundred forty-five million, nine hundred fifty-eight thousand, four hundred fifty-seven".