20207651406 has 16 divisors (see below), whose sum is σ = 40682955648. Its totient is φ = 6691275000.

The previous prime is 20207651377. The next prime is 20207651441. The reversal of 20207651406 is 60415670202.

It is a super-3 number, since 3×20207651406³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11151220 + ... + 11153031.

It is an arithmetic number, because the mean of its divisors is an integer number (2542684728).

Almost surely, 2^20207651406 is an apocalyptic number.

20207651406 is an abundant number, since it is smaller than the sum of its proper divisors (20475304242).

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

20207651406 is a wasteful number, since it uses less digits than its factorization.

20207651406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22304407.

The product of its (nonzero) digits is 20160, while the sum is 33.

The spelling of 20207651406 in words is "twenty billion, two hundred seven million, six hundred fifty-one thousand, four hundred six".