20387077501 has 16 divisors (see below), whose sum is σ = 25968504960. Its totient is φ = 15581099520.

The previous prime is 20387077489. The next prime is 20387077519. The reversal of 20387077501 is 10577078302.

It is not a de Polignac number, because 20387077501 - 2¹³ = 20387069309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20387077531) 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, 4506160 + ... + 4510681.

It is an arithmetic number, because the mean of its divisors is an integer number (1623031560).

Almost surely, 2^20387077501 is an apocalyptic number.

It is an amenable number.

20387077501 is a deficient number, since it is larger than the sum of its proper divisors (5581427459).

20387077501 is a wasteful number, since it uses less digits than its factorization.

20387077501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9016884.

The product of its (nonzero) digits is 82320, while the sum is 40.

The spelling of 20387077501 in words is "twenty billion, three hundred eighty-seven million, seventy-seven thousand, five hundred one".