4291147778538 has 16 divisors (see below), whose sum is σ = 8584205759136. Its totient is φ = 1430064225840.

The previous prime is 4291147778507. The next prime is 4291147778551. The reversal of 4291147778538 is 8358777411924.

It is a super-2 number, since 2×4291147778538² (a number of 26 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, 79562548 + ... + 79616463.

It is an arithmetic number, because the mean of its divisors is an integer number (536512859946).

Almost surely, 2^{4291147778538} is an apocalyptic number.

4291147778538 is an abundant number, since it is smaller than the sum of its proper divisors (4293057980598).

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

4291147778538 is a wasteful number, since it uses less digits than its factorization.

4291147778538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159183509.

The product of its digits is 94832640, while the sum is 66.

The spelling of 4291147778538 in words is "four trillion, two hundred ninety-one billion, one hundred forty-seven million, seven hundred seventy-eight thousand, five hundred thirty-eight".