4020157890459 has 6 divisors (see below), whose sum is σ = 5806894730676. Its totient is φ = 2680105260300.

The previous prime is 4020157890451. The next prime is 4020157890479. The reversal of 4020157890459 is 9540987510204.

It is a happy number.

4020157890459 is a `hidden beast` number, since 4 + 0 + 20 + 1 + 578 + 9 + 0 + 45 + 9 = 666.

It is not a de Polignac number, because 4020157890459 - 2³ = 4020157890451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4020157890451) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 223342105017 + ... + 223342105034.

It is an arithmetic number, because the mean of its divisors is an integer number (967815788446).

Almost surely, 2^{4020157890459} is an apocalyptic number.

4020157890459 is a deficient number, since it is larger than the sum of its proper divisors (1786736840217).

4020157890459 is a wasteful number, since it uses less digits than its factorization.

4020157890459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446684210057 (or 446684210054 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 54.

The spelling of 4020157890459 in words is "four trillion, twenty billion, one hundred fifty-seven million, eight hundred ninety thousand, four hundred fifty-nine".