20637213734 has 16 divisors (see below), whose sum is σ = 31732475760. Its totient is φ = 10062898560.

The previous prime is 20637213713. The next prime is 20637213739. The reversal of 20637213734 is 43731273602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20637213739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 781112 + ... + 807099.

It is an arithmetic number, because the mean of its divisors is an integer number (1983279735).

Almost surely, 2^20637213734 is an apocalyptic number.

20637213734 is a deficient number, since it is larger than the sum of its proper divisors (11095262026).

20637213734 is a wasteful number, since it uses less digits than its factorization.

20637213734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1588375.

The product of its (nonzero) digits is 127008, while the sum is 38.

The spelling of 20637213734 in words is "twenty billion, six hundred thirty-seven million, two hundred thirteen thousand, seven hundred thirty-four".