2091621993362 has 16 divisors (see below), whose sum is σ = 3448781306784. Its totient is φ = 943479732000.

The previous prime is 2091621993361. The next prime is 2091621993397. The reversal of 2091621993362 is 2633991261902.

It is not an unprimeable number, because it can be changed into a prime (2091621993361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 362873939 + ... + 362879702.

It is an arithmetic number, because the mean of its divisors is an integer number (215548831674).

Almost surely, 2^{2091621993362} is an apocalyptic number.

2091621993362 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2091621993362 is a deficient number, since it is larger than the sum of its proper divisors (1357159313422).

2091621993362 is a wasteful number, since it uses less digits than its factorization.

2091621993362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725753785.

The product of its (nonzero) digits is 1889568, while the sum is 53.

The spelling of 2091621993362 in words is "two trillion, ninety-one billion, six hundred twenty-one million, nine hundred ninety-three thousand, three hundred sixty-two".