75421540715 has 8 divisors (see below), whose sum is σ = 91166476320. Its totient is φ = 59896814272.

The previous prime is 75421540681. The next prime is 75421540739. The reversal of 75421540715 is 51704512457.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 75421540715 - 2⁶ = 75421540651 is a prime.

It is a super-2 number, since 2×75421540715² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55051535 + ... + 55052904.

It is an arithmetic number, because the mean of its divisors is an integer number (11395809540).

Almost surely, 2^75421540715 is an apocalyptic number.

75421540715 is a deficient number, since it is larger than the sum of its proper divisors (15744935605).

75421540715 is a wasteful number, since it uses less digits than its factorization.

75421540715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110104581.

The product of its (nonzero) digits is 196000, while the sum is 41.

The spelling of 75421540715 in words is "seventy-five billion, four hundred twenty-one million, five hundred forty thousand, seven hundred fifteen".