20860001771 has 16 divisors (see below), whose sum is σ = 24663296448. Its totient is φ = 17271168000.

The previous prime is 20860001761. The next prime is 20860001783. The reversal of 20860001771 is 17710006802.

It is not a de Polignac number, because 20860001771 - 2⁶ = 20860001707 is a prime.

It is a super-2 number, since 2×20860001771² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20860001761) 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, 330830 + ... + 388803.

It is an arithmetic number, because the mean of its divisors is an integer number (1541456028).

Almost surely, 2^20860001771 is an apocalyptic number.

20860001771 is a deficient number, since it is larger than the sum of its proper divisors (3803294677).

20860001771 is a wasteful number, since it uses less digits than its factorization.

20860001771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719782.

The product of its (nonzero) digits is 4704, while the sum is 32.

The spelling of 20860001771 in words is "twenty billion, eight hundred sixty million, one thousand, seven hundred seventy-one".