2159379378650 has 48 divisors (see below), whose sum is σ = 4335167469024. Its totient is φ = 795509407680.

The previous prime is 2159379378649. The next prime is 2159379378659. The reversal of 2159379378650 is 568739739512.

It is a Harshad number since it is a multiple of its sum of digits (65).

It is not an unprimeable number, because it can be changed into a prime (2159379378659) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3461624 + ... + 4037523.

It is an arithmetic number, because the mean of its divisors is an integer number (90315988938).

Almost surely, 2^{2159379378650} is an apocalyptic number.

2159379378650 is an abundant number, since it is smaller than the sum of its proper divisors (2175788090374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2159379378650 is a wasteful number, since it uses less digits than its factorization.

2159379378650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7499615 (or 7499610 counting only the distinct ones).

The product of its (nonzero) digits is 85730400, while the sum is 65.

The spelling of 2159379378650 in words is "two trillion, one hundred fifty-nine billion, three hundred seventy-nine million, three hundred seventy-eight thousand, six hundred fifty".