20292793947 has 16 divisors (see below), whose sum is σ = 31370503680. Its totient is φ = 12940331976.

The previous prime is 20292793909. The next prime is 20292793973. The reversal of 20292793947 is 74939729202.

It is not a de Polignac number, because 20292793947 - 2¹⁴ = 20292777563 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20292793893 and 20292793902.

It is not an unprimeable number, because it can be changed into a prime (20292795947) 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, 16338183 + ... + 16339424.

It is an arithmetic number, because the mean of its divisors is an integer number (1960656480).

Almost surely, 2^20292793947 is an apocalyptic number.

20292793947 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

20292793947 is a deficient number, since it is larger than the sum of its proper divisors (11077709733).

20292793947 is a wasteful number, since it uses less digits than its factorization.

20292793947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32677639 (or 32677633 counting only the distinct ones).

The product of its (nonzero) digits is 3429216, while the sum is 54.

The spelling of 20292793947 in words is "twenty billion, two hundred ninety-two million, seven hundred ninety-three thousand, nine hundred forty-seven".