201511153464 has 16 divisors (see below), whose sum is σ = 503777883720. Its totient is φ = 67170384480.

The previous prime is 201511153433. The next prime is 201511153469. The reversal of 201511153464 is 464351115102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201511153469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4198149007 + ... + 4198149054.

Almost surely, 2^201511153464 is an apocalyptic number.

201511153464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

201511153464 is an abundant number, since it is smaller than the sum of its proper divisors (302266730256).

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

201511153464 is a wasteful number, since it uses less digits than its factorization.

201511153464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8396298070 (or 8396298066 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

Adding to 201511153464 its reverse (464351115102), we get a palindrome (665862268566).

The spelling of 201511153464 in words is "two hundred one billion, five hundred eleven million, one hundred fifty-three thousand, four hundred sixty-four".