215523067898040 has 256 divisors, whose sum is σ = 787469513195520. Its totient is φ = 46118005824000.

The previous prime is 215523067898027. The next prime is 215523067898053. The reversal of 215523067898040 is 40898760325512.

It is an interprime number because it is at equal distance from previous prime (215523067898027) and next prime (215523067898053).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 117766836 + ... + 119582915.

It is an arithmetic number, because the mean of its divisors is an integer number (3076052785920).

It is a 1-persistent number, because it is pandigital, but 2⋅215523067898040 = 431046135796080 is not.

Almost surely, 2^{215523067898040} is an apocalyptic number.

215523067898040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215523067898040 is an abundant number, since it is smaller than the sum of its proper divisors (571946445297480).

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

215523067898040 is a wasteful number, since it uses less digits than its factorization.

215523067898040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237349842 (or 237349838 counting only the distinct ones).

The product of its (nonzero) digits is 29030400, while the sum is 60.

The spelling of 215523067898040 in words is "two hundred fifteen trillion, five hundred twenty-three billion, sixty-seven million, eight hundred ninety-eight thousand, forty".