72760177506157 has 4 divisors (see below), whose sum is σ = 72763534708540. Its totient is φ = 72756820303776.

The previous prime is 72760177506109. The next prime is 72760177506227. The reversal of 72760177506157 is 75160577106727.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 71429982043876 + 1330195462281 = 8451626^2 + 1153341^2 .

It is a cyclic number.

It is not a de Polignac number, because 72760177506157 - 2¹¹ = 72760177504109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72760177506095 and 72760177506104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72760177546157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1678568682 + ... + 1678612027.

It is an arithmetic number, because the mean of its divisors is an integer number (18190883677135).

Almost surely, 2^{72760177506157} is an apocalyptic number.

It is an amenable number.

72760177506157 is a deficient number, since it is larger than the sum of its proper divisors (3357202383).

72760177506157 is a wasteful number, since it uses less digits than its factorization.

72760177506157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3357202382.

The product of its (nonzero) digits is 30252600, while the sum is 61.

The spelling of 72760177506157 in words is "seventy-two trillion, seven hundred sixty billion, one hundred seventy-seven million, five hundred six thousand, one hundred fifty-seven".