1478723654540 has 48 divisors (see below), whose sum is σ = 3418700614560. Its totient is φ = 532784494080.

The previous prime is 1478723654539. The next prime is 1478723654591. The reversal of 1478723654540 is 454563278741.

It is a happy number.

It is a super-2 number, since 2×1478723654540² (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 15 ways as a sum of consecutive naturals, for example, 30808457 + ... + 30856416.

It is an arithmetic number, because the mean of its divisors is an integer number (71222929470).

Almost surely, 2^{1478723654540} is an apocalyptic number.

1478723654540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1478723654540 is an abundant number, since it is smaller than the sum of its proper divisors (1939976960020).

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

1478723654540 is a wasteful number, since it uses less digits than its factorization.

1478723654540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61665002 (or 61665000 counting only the distinct ones).

The product of its (nonzero) digits is 22579200, while the sum is 56.

The spelling of 1478723654540 in words is "one trillion, four hundred seventy-eight billion, seven hundred twenty-three million, six hundred fifty-four thousand, five hundred forty".