1491111618060 has 24 divisors (see below), whose sum is σ = 4175112530736. Its totient is φ = 397629764800.

The previous prime is 1491111618049. The next prime is 1491111618071. The reversal of 1491111618060 is 608161111941.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1491111618049) and next prime (1491111618071).

It is a super-2 number, since 2×1491111618060² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12425930091 + ... + 12425930210.

It is an arithmetic number, because the mean of its divisors is an integer number (173963022114).

Almost surely, 2^{1491111618060} is an apocalyptic number.

1491111618060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1491111618060 is an abundant number, since it is smaller than the sum of its proper divisors (2684000912676).

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

1491111618060 is a wasteful number, since it uses less digits than its factorization.

1491111618060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24851860313 (or 24851860311 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 39.

The spelling of 1491111618060 in words is "one trillion, four hundred ninety-one billion, one hundred eleven million, six hundred eighteen thousand, sixty".