6420157981514 has 16 divisors (see below), whose sum is σ = 9720858755520. Its totient is φ = 3180008106240.

The previous prime is 6420157981469. The next prime is 6420157981519. The reversal of 6420157981514 is 4151897510246.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (6420157981519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33999767 + ... + 34188074.

It is an arithmetic number, because the mean of its divisors is an integer number (607553672220).

Almost surely, 2^{6420157981514} is an apocalyptic number.

6420157981514 is a deficient number, since it is larger than the sum of its proper divisors (3300700774006).

6420157981514 is a wasteful number, since it uses less digits than its factorization.

6420157981514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68188285.

The product of its (nonzero) digits is 2419200, while the sum is 53.

The spelling of 6420157981514 in words is "six trillion, four hundred twenty billion, one hundred fifty-seven million, nine hundred eighty-one thousand, five hundred fourteen".