20874462777542 has 48 divisors (see below), whose sum is σ = 35917474795776. Its totient is φ = 9074817774000.

The previous prime is 20874462777541. The next prime is 20874462777577. The reversal of 20874462777542 is 24577726447802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20874462777541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49611773 + ... + 50030759.

It is an arithmetic number, because the mean of its divisors is an integer number (748280724912).

Almost surely, 2^{20874462777542} is an apocalyptic number.

20874462777542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20874462777542 is a deficient number, since it is larger than the sum of its proper divisors (15043012018234).

20874462777542 is a wasteful number, since it uses less digits than its factorization.

20874462777542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427985 (or 427974 counting only the distinct ones).

The product of its (nonzero) digits is 295034880, while the sum is 65.

The spelling of 20874462777542 in words is "twenty trillion, eight hundred seventy-four billion, four hundred sixty-two million, seven hundred seventy-seven thousand, five hundred forty-two".