20015255610707 has 16 divisors (see below), whose sum is σ = 23614128924672. Its totient is φ = 16601347949760.

The previous prime is 20015255610629. The next prime is 20015255610719. The reversal of 20015255610707 is 70701655251002.

It is a happy number.

It is not a de Polignac number, because 20015255610707 - 2¹⁸ = 20015255348563 is a prime.

It is a super-2 number, since 2×20015255610707² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20015255610407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147218 + ... + 6328679.

It is an arithmetic number, because the mean of its divisors is an integer number (1475883057792).

Almost surely, 2^{20015255610707} is an apocalyptic number.

20015255610707 is a deficient number, since it is larger than the sum of its proper divisors (3598873313965).

20015255610707 is a wasteful number, since it uses less digits than its factorization.

20015255610707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6490178.

The product of its (nonzero) digits is 147000, while the sum is 41.

The spelling of 20015255610707 in words is "twenty trillion, fifteen billion, two hundred fifty-five million, six hundred ten thousand, seven hundred seven".