2391309521630 has 64 divisors (see below), whose sum is σ = 4395648384000. Its totient is φ = 936429529728.

The previous prime is 2391309521621. The next prime is 2391309521693. The reversal of 2391309521630 is 361259031932.

2391309521630 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2391309521630² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81491501 + ... + 81520839.

It is an arithmetic number, because the mean of its divisors is an integer number (68682006000).

Almost surely, 2^{2391309521630} is an apocalyptic number.

2391309521630 is a deficient number, since it is larger than the sum of its proper divisors (2004338862370).

2391309521630 is a wasteful number, since it uses less digits than its factorization.

2391309521630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30161.

The product of its (nonzero) digits is 262440, while the sum is 44.

The spelling of 2391309521630 in words is "two trillion, three hundred ninety-one billion, three hundred nine million, five hundred twenty-one thousand, six hundred thirty".