7621156157 has 8 divisors (see below), whose sum is σ = 7878922752. Its totient is φ = 7364134800.

The previous prime is 7621156111. The next prime is 7621156159. The reversal of 7621156157 is 7516511267.

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 7621156157 - 2²⁸ = 7352720701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7621156159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165473 + ... + 206454.

It is an arithmetic number, because the mean of its divisors is an integer number (984865344).

Almost surely, 2^7621156157 is an apocalyptic number.

It is an amenable number.

7621156157 is a deficient number, since it is larger than the sum of its proper divisors (257766595).

7621156157 is a wasteful number, since it uses less digits than its factorization.

7621156157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372619.

The product of its digits is 88200, while the sum is 41.

The square root of 7621156157 is about 87299.2334273331. The cubic root of 7621156157 is about 1967.9177976611.

The spelling of 7621156157 in words is "seven billion, six hundred twenty-one million, one hundred fifty-six thousand, one hundred fifty-seven".