7145277621 has 16 divisors (see below), whose sum is σ = 9755651136. Its totient is φ = 4649371776.

The previous prime is 7145277577. The next prime is 7145277641. The reversal of 7145277621 is 1267725417.

It is not a de Polignac number, because 7145277621 - 2¹⁵ = 7145244853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7145277641) 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, 165531 + ... + 204183.

It is an arithmetic number, because the mean of its divisors is an integer number (609728196).

Almost surely, 2^7145277621 is an apocalyptic number.

It is an amenable number.

7145277621 is a deficient number, since it is larger than the sum of its proper divisors (2610373515).

7145277621 is a wasteful number, since it uses less digits than its factorization.

7145277621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40132.

The product of its digits is 164640, while the sum is 42.

The square root of 7145277621 is about 84529.7440017418. The cubic root of 7145277621 is about 1926.0742973854.

The spelling of 7145277621 in words is "seven billion, one hundred forty-five million, two hundred seventy-seven thousand, six hundred twenty-one".