20347277742 has 48 divisors (see below), whose sum is σ = 48170079360. Its totient is φ = 6156032400.

The previous prime is 20347277723. The next prime is 20347277789. The reversal of 20347277742 is 24777274302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43509 + ... + 206367.

It is an arithmetic number, because the mean of its divisors is an integer number (1003543320).

Almost surely, 2^20347277742 is an apocalyptic number.

20347277742 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20347277742 is an abundant number, since it is smaller than the sum of its proper divisors (27822801618).

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

20347277742 is a wasteful number, since it uses less digits than its factorization.

20347277742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163509 (or 163506 counting only the distinct ones).

The product of its (nonzero) digits is 921984, while the sum is 45.

The spelling of 20347277742 in words is "twenty billion, three hundred forty-seven million, two hundred seventy-seven thousand, seven hundred forty-two".