39980856265 has 32 divisors (see below), whose sum is σ = 56131485696. Its totient is φ = 26765726400.

The previous prime is 39980856247. The next prime is 39980856283. The reversal of 39980856265 is 56265808993.

It is an interprime number because it is at equal distance from previous prime (39980856247) and next prime (39980856283).

It is not a de Polignac number, because 39980856265 - 2⁵ = 39980856233 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4364440 + ... + 4373590.

It is an arithmetic number, because the mean of its divisors is an integer number (1754108928).

Almost surely, 2^39980856265 is an apocalyptic number.

39980856265 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

39980856265 is a deficient number, since it is larger than the sum of its proper divisors (16150629431).

39980856265 is a wasteful number, since it uses less digits than its factorization.

39980856265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12109.

The product of its (nonzero) digits is 27993600, while the sum is 61.

The spelling of 39980856265 in words is "thirty-nine billion, nine hundred eighty million, eight hundred fifty-six thousand, two hundred sixty-five".