201977541948 has 144 divisors (see below), whose sum is σ = 595814825760. Its totient is φ = 52779879936.

The previous prime is 201977541863. The next prime is 201977541973. The reversal of 201977541948 is 849145779102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 711990 + ... + 954402.

Almost surely, 2^201977541948 is an apocalyptic number.

201977541948 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201977541948, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297907412880).

201977541948 is an abundant number, since it is smaller than the sum of its proper divisors (393837283812).

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

201977541948 is a wasteful number, since it uses less digits than its factorization.

201977541948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242556 (or 242547 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 57.

The spelling of 201977541948 in words is "two hundred one billion, nine hundred seventy-seven million, five hundred forty-one thousand, nine hundred forty-eight".