201367564458978 has 96 divisors (see below), whose sum is σ = 427064870836800. Its totient is φ = 63288463162752.

The previous prime is 201367564458953. The next prime is 201367564459003. The reversal of 201367564458978 is 879854465763102.

It is an interprime number because it is at equal distance from previous prime (201367564458953) and next prime (201367564459003).

It is a super-2 number, since 2×201367564458978² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 507960628 + ... + 508356896.

It is an arithmetic number, because the mean of its divisors is an integer number (4448592404550).

It is a 2-persistent number, because it is pandigital, and so is 2⋅201367564458978 = 402735128917956, but 3⋅201367564458978 = 604102693376934 is not.

Almost surely, 2^{201367564458978} is an apocalyptic number.

201367564458978 is an abundant number, since it is smaller than the sum of its proper divisors (225697306377822).

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

201367564458978 is a wasteful number, since it uses less digits than its factorization.

201367564458978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397424 (or 397405 counting only the distinct ones).

The product of its (nonzero) digits is 2438553600, while the sum is 75.

The spelling of 201367564458978 in words is "two hundred one trillion, three hundred sixty-seven billion, five hundred sixty-four million, four hundred fifty-eight thousand, nine hundred seventy-eight".