20137856418702 has 48 divisors (see below), whose sum is σ = 49361479719552. Its totient is φ = 6102380731320.

The previous prime is 20137856418611. The next prime is 20137856418731. The reversal of 20137856418702 is 20781465873102.

20137856418702 is a `hidden beast` number, since 2 + 0 + 1 + 3 + 7 + 8 + 564 + 1 + 8 + 70 + 2 = 666.

It is a super-2 number, since 2×20137856418702² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1883445498 + ... + 1883456189.

It is an arithmetic number, because the mean of its divisors is an integer number (1028364160824).

Almost surely, 2^{20137856418702} is an apocalyptic number.

20137856418702 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20137856418702 is an abundant number, since it is smaller than the sum of its proper divisors (29223623300850).

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

20137856418702 is a wasteful number, since it uses less digits than its factorization.

20137856418702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3766901715 (or 3766901703 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 54.

The spelling of 20137856418702 in words is "twenty trillion, one hundred thirty-seven billion, eight hundred fifty-six million, four hundred eighteen thousand, seven hundred two".