2640360099 has 32 divisors (see below), whose sum is σ = 4022394880. Its totient is φ = 1527144192.

The previous prime is 2640360097. The next prime is 2640360103. The reversal of 2640360099 is 9900630462.

It is a happy number.

It is not a de Polignac number, because 2640360099 - 2¹ = 2640360097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2640360097) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80079 + ... + 108135.

It is an arithmetic number, because the mean of its divisors is an integer number (125699840).

Almost surely, 2^2640360099 is an apocalyptic number.

2640360099 is a deficient number, since it is larger than the sum of its proper divisors (1382034781).

2640360099 is a wasteful number, since it uses less digits than its factorization.

2640360099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28219.

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 2640360099 is about 51384.4344038153. The cubic root of 2640360099 is about 1382.1474824508.

The spelling of 2640360099 in words is "two billion, six hundred forty million, three hundred sixty thousand, ninety-nine".